Shadow shot comes with bloodbound automatically rolled in and does a shitlload of damage on hit. When paired with a vortex grenade it is just obscene. I'm using the spec with vanish in smoke and with gamblers dodge cooling down my melee on each dodge I can vanish extremely often, which is fantastic for pve. I haven't really paid attention to Shadow shot orb generation, so I'm not sure if it's as good as d1 in that regard.
Nightstalker rules. I'm usually a titan and I do not regret starting with a hunter at all.